Do you mean the transfer bar?
I should get a picture of the OEM Saiga FCG for everyones reference here...
You can swap parts, buy a Tapco G2 single hook FCG, then make the G2 trigger look like the Russian trigger, that means grinding off the trigger so it looks like the Russian trigger, take the Russian FCG out and install the G2, you will have to tweak it a bit to use it with the funny transfer bar system and so the BHO still works, but it will give you a pull around 4 lbs IIRC.
My OEM trigger was close to double that at maybe 8lbs
Better yet contact Dinzag, can sell you a pre-modified G2 that should fit your needs.
And you will not even have to change the appearance of your Saiga, it will look the same, but have a better trigger.